气候变化领域集成服务门户(CCPortal): Genesis of the Antarctic Slope Current in West Antarctica

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DOI	10.1029/2020GL087802
	Genesis of the Antarctic Slope Current in West Antarctica
	Thompson A.F.; Speer K.G.; Schulze Chretien L.M.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:16
英文摘要	The stability of the West Antarctic Ice Sheet (WAIS) depends on ocean heat transport toward its base and remains a source of uncertainty in sea level rise prediction. The Antarctic Slope Current (ASC), a major boundary current of the ocean's global circulation, serves as a dynamic gateway for heat transport toward Antarctica. Here, we use observations collected from the Bellingshausen Sea to propose a mechanistic explanation for the initiation of the westward-flowing ASC. Waters modified throughout the Bellingshausen Sea by ocean-sea-ice and ocean-ice-shelf interactions are exported to the continental slope in a narrow, topographically steered western boundary current. This focused outflow produces a localized front at the shelf break that supports the emerging ASC. This mechanism emphasizes the importance of buoyancy forcing, integrated over the continental shelf, as opposed to local wind forcing, in the generation mechanism and suggests the potential for remote control of melt rates of WAIS' largest ice shelves. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Heat transfer; Remote control; Sea ice; Sea level; Boundary currents; Continental shelves; Continental slope; Generation mechanism; Global circulation; Ocean heat transport; West antarctic ice sheets; Western boundary currents; Ice control; boundary current; buoyancy forcing; continental slope; outflow; sea ice; sea level change; shelf break; snowmelt; wind forcing; Antarctic Ice Sheet; Antarctica; Bellingshausen Sea; Southern Ocean; West Antarctic Ice Sheet; West Antarctica
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/169855
作者单位	Environmental Science and Engineering, California Institute of Technology, Pasadena, CA, United States; Geophysical Fluid Dynamics Institute and Department of Earth, Ocean, and Atmospheric Science, Florida State University, Tallahassee, FL, United States; Marine Science Research Institute, Jacksonville University, Jacksonville, FL, United States
推荐引用方式 GB/T 7714	Thompson A.F.,Speer K.G.,Schulze Chretien L.M.. Genesis of the Antarctic Slope Current in West Antarctica[J],2020,47(16).
APA	Thompson A.F.,Speer K.G.,&Schulze Chretien L.M..(2020).Genesis of the Antarctic Slope Current in West Antarctica.Geophysical Research Letters,47(16).
MLA	Thompson A.F.,et al."Genesis of the Antarctic Slope Current in West Antarctica".Geophysical Research Letters 47.16(2020).